fix: makefile destination path

Signed-off-by: Vitor Mattos <[email protected]>

Author: vitormattos

docs/Makefile

@@ -25,12 +25,12 @@ main:
 	sphinx-build main ../_build
 
 user:
-	sphinx-build user_manual ../_build
+	sphinx-build user_manual ../_build/user_manual
 
 admin:
-	sphinx-build admin_manual ../_build
+	sphinx-build admin_manual ../_build/admin_manual
 
 dev:
-	sphinx-build developer_manual ../_build
+	sphinx-build developer_manual ../_build/developer_manual
 
 all: main user admin dev